Hello guys,

First of all thank you for reading my post.

I am aiming to build a battery charge indicator with external LEDs that pulse red when charging and then switch to a solid state of green when charging is complete.

I have found some basic charge indicators online that are ideal but non seem to be able to add external LED's.

If anyone can help or point me in the right direction it would be greatly appreciated.

(The link below shows a basic indicator that i am talking about)

https://www.banggood.com/12V24V36V4...qET781C4SOKJlYhoCQSUQAvD_BwE&cur_warehouse=CN

 

hi Mark,
Welcome to AAC,
That banggood LED indicator is OK , but as you say adding LED's to it would be difficult.
Do you have any electronic building tools/skills.?
E

 

Hello Eric,

yes i have some tools and some basic knowledge. I am studying a HNC at the moment and did A level electronics in college a fair few years ago so its all a bit rusty.

Thanks,

Mark

 

I was wondering if something like this could be incorporated?

Thanks,

Mark

 

hi,
Look at this AAC thread link, may give you some options.
https://www.google.com/url?sa=t&rct...rger.117322/&usg=AOvVaw1N4uK1JeD258dsELnfOse3
E

Looking that indicator in post #4, looks OK, did you want it in a 24V version.?

 

Thanks again for your replies,

Yes thats similar to what i have already found.

Could a solution be as simple as a pulsing LED to be going permanently until the indicator reaches 100% then through an AND gate activates the green solid state?

Thanks,

Mark

 

or possibly using an arduino uno with some code could be a way to go?

 

hi,
Can you post details of the project, battery voltage and type, charger specification etc.
E

Ref the Arduino, it can be done that way if you prefer.

 

yes its for a mobility scooter, so 2 x 12v batteries connected in series.

 

hi,
This type is a low cost option, but its voltage limit is 26Vdc.
https://www.amazon.co.uk/dp/B075LC3S6P/ref=pe_3187911_189395841_TE_3p_dp_1

We need to know the specification of your charger, it will possible to build a high side current sensor and voltage divider for the Arduino ADC input.
Do you write in Arduino code.?
E

 

hi Mark,
This build is a simple option for a battery charger voltage and current measurement , using Arduino ADC inputs.
E